NuTone 668RP User Manual
Architectural & Engineering Specifications
March 2004
Ceiling
Fan-Light
MODEL: 668RP
DESCRIPTION
• Efficient ventilation from quiet blower fan combined
with bright ceiling light.
• Unbreakable light lens snaps on and off for easy
relamping.
• Low profile grille.
• Adjustable hanger bars.
• Plug-in vent fan and light receptacle.
• Duct adapter included with built-in damper. Connects
to 4" round duct.
• For your convenience, NuTone offers a complete line
of accessories to adapt this unit to your construction
requirements.
DESIGN FEATURES
Air Delivery: 70 CFM at 0.1" S.P.
Sound Level: 4.0 Sones.
Dimensions: Housing: 143⁄
4
" x 7
7
⁄
8
" x 5
5
⁄
8
".
Grille: 16
1
⁄4" x 97⁄8".
Ceiling Extension: 11⁄4".
Lamp: 100 watt maximum
(bulb not provided.)
Material & Housing: Cold rolled steel,
galvanized.
Component Data: Grille: White textured polymeric.
Lens: White plastic.
Reflector: Aluminum.
Motor: 115vAC, 60 Hz, thermally protected,
shaded pole.
Impeller: Polymeric, 43⁄4” dia.
electronically balanced.
Duct Size: 4" diameter.
Electrical Rating: 120V, 60Hz, 2.0A.
INSTALLATION
• Adjustable hanger bars attach to 16" or 24" O.C. jousts
in new construction.
• Each unit includes complete Installation Instructions
for both new and existing construction.
• Suitable for use over a tub or shower enclosure when
installed in a GFI protected branch circuit.
• Type IC suitable for use under thermal insulation.
ARCHITECT'S SPECIFICATIONS
Ceiling Fan-Light Combination shall be Model 668RP as
manufactured by NuTone according to listed specifications.
Vent-A-Lite
®
NUTONE, INC. / 4820 RED BANK ROAD, CINCINNATI, OHIO 45227
Product specifications subject to change without notice.
REFERENCE QTY. REMARKS Project
Location
Architect
Engineer
Contractor
Submitted by Date
CERTIFIED TEST DATA
HVI-2100 CERTIFIED RATINGS comply with new
testing technologies and procedures prescribed by the
Home Ventilating Institute, for off-the-shelf products, as
they are available to consumers. Product performance is
rated at 0.1 in. static pressure, based on tests conducted in
AMCA's state-of-the-art test laboratory. Sones are a
measure of humanly-perceived loudness, based on
laboratory measurements. This NuTone model is listed by
Underwriters' Laboratories Inc.
The air delivery of a ventilating system may be
determined by:
1. Determine the equivalent duct length for each 90 degree
elbow by adding one foot of duct length for each inch of
duct diameter, i.e., a 4 inch diameter duct elbow equals
4 feet equivalent duct length and an 8 inch diameter
duct elbow equals 8 feet equivalent duct length.
2. Add the total straight length of duct and the equivalent
length for each elbow to obtain the total equivalent
duct length.
3. Locate the intersection of the fan performance curve and
the total equivalent duct length curves and draw a
vertical line down to the CFM scale and read the system
air performance.
(NOTE: 31⁄
4
" x 10" duct equals 6 inch diameter duct.)
10 050
0
0.0 0
0.10
0. 20
0.3 0
0.4 0
0.5 0
STATIC PRESSURE–INCHES OF WATER
50 Feet
40 Feet
30 Feet
20 Feet
10 Feet
CFM CUBIC FEET PER MINUTE
75 12525
AIR PERFORMANCE CURVE
(4 In. Duct to 10 Foot Lengths)
STATIC PRESSURE
INCHES OF WATER
CFM
0.05
77 75 72 70 67 64 60 54 47
0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45
LIGHT
SOCKET
REFLECTOR
MOUNTING
SCREW
TYPICAL INSTALLATION
Product specifications subject to change without notice.
NuTone, Inc., 4820 Red Bank Road, Cincinnati, Ohio 45227
Printed in U.S.A.
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